040000 tree a49abab214520202ed5b4ca320c6ff2270d4593c	arc
040000 tree fd69ac7b8895ad6eace0b928abbbc1b00c1571fb	arm
100644 blob ef79bc1b2cb258dcd754d7472e2bc4ecdee8e3b6	cpu.h
040000 tree 6b63bf726fe084cd01259bdc5c8e1efd1f930ab8	nios2
040000 tree 15f87d5d0bc0cd29b8a8f65bad10bab036e2ea56	riscv32
040000 tree 39a826329be3514556d416be823e6bab31d2be3b	x86
040000 tree 884fbce5df02c330879d46088aa1181a487b68c9	xtensa